Shuttle-motion for looms.



No. 829,376. PATBNTED AUG 21, 1906.

G. GIUSSAEI.

SHUTTLE MOTIQR FOR LGOMS.

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GIOVANNI GIUSSANI, OF LONDON, ENGLAND, ,ASSIGNOR TO SAMUEL SHAW CRISP AND HERBERT GRICE, TRADING AS FIRM OF DUKE, VVARING, CRISP & GO, OF LONDON, ENGLAND.

SHUTTLE-MOTION FOR LOOIVIS.

Original application filed July 21,1904, Serial No. 217,462. Divided and this application filed To all whom it may concern.-

Be it known that I, GIOVANNI GIUssANI, engineer, a subject of the King of Great Britsin and Ireland, residing at 6 Church Gardens, Ealing, in the county of London. England, have invented certain new and useful improvements in Shuttle-Motions for Looms, of which the following is a specification.

This invention, which originally formed part of my patent application Serial No. 217,462, dated July 21, 1904, of which this is a division, relates to a shuttle-motion suitable for a loom for making sheets or nets of heavy comparatively rigid material, such as helically-twisted wire.

Figure l is a transverse section showing the mechanism for moving the shuttle. Fig. 2 is a plan view of the same with portions of the frame in section, and Fig. 3 is a detail view drawn to an enlarged scale.

In the loom for which this shuttle-motion is primarily intended each arp (1 passes through a tube 6, which tubes form the shed through which the shuttle-drum d is passed. The tubes 0 are arranged in two series alternating with each other, those of one series being hinged to one heald and those of the other series to a second heald, as shown in Fig. 2. The tubes held from moving laterally by means of suitable comb arrangements, which when the healds are moved in opposite directions to make the shed, as in a common loom, rest on the moving tubes.

The weft-wire is wound on the drum d, mounted to rotate in a horizontal plane on a slide Fig. l, which moves in a guideway i, extending transversely of the loom. This guideway has a transverse groove 11, corresponding with each of the tubes (1, to accommodate the tube in its downward movement. The wire is guided from the drum by an eye (l' in a frame (1 and is kept from being loose on the drum by a spring-band a, Fig. 2.

The mechanism for moving the drum to and fro through the shed comprises a slide k, also moving in the guideway 1, a rod k, connecting the slide with a cross-head 7o downwardly-extending projections 7c k on the said cross-head and an endless traveling chain k k on each side of a frame H, which supports bars 7r, whereon the cross-head k slides. The endless chains are driven at a Specification of Letters Patent.

Patented Aug. 21, 1906. AugnstlBJQOfi. saamamaaea cated by the arrows in Fig. 2, by sprockets 7c 15" and carry each a tap et k k. On a. horizontal pivot on the slide k turns a hook k, which in the position shown in Fig. is resting on the tooth of a crown-wheel in, turning on a vertical pivot carried by the slide. A pawl 7c pivoted to a push-rod k, engages with ratchet-teeth on the periphery of the crown-wheel is. When in the course of its movement in the direction of the arrow the chain 76 brings the tappet is" against the projection is on the cross-head k the latter is moved to the right, pushing the slide l'c until the push-rod k is pressed against the frame (1', which position of the parts corresponds with the disengagement of the tappet 7e and the projections It. By coming against the frame (1" the push-rod has been moved rearwardly against the pressure of spring k" and has turned by its pawl k" the crownwheel 7c, causing the hook k" to [all from its sup orting-tooth and to take into an eye (i on t ie frame (1. Immediately afterward the tappet it strikes the projection k" on the cross-head k and moves the latter back again, bringing drum (1 with it. The play of the hook it in the eye d is such that the beinning of the backward movement of the toad k relieves the pressure of the red A? against the frame (1, thus allowing spring k to urge the rod forward, so that the pawl 16' takes into the next ratchet-tooth. The reciprocation of the head k just described occurs during a pause in the movement of the healds which may be produced in any known manner, and the next shed is not formed until drum (2 is at the end of the guidewayi opposite to that at which it is shown in Figs. 1 and 2. By the time this next shed is formed tappet is has again come against ')rojection k and the cross-head k is moved to push the drum of back into the position shown in Figs. 1 and 2. The play of the hook it in the eye d causes the initial movement of cross-head k in the forward direction to press the rod 7c against the frame d, thus turning the crownwheel 7c and causing the book 70' to ride up to the top of the next tooth of the crownwheel k, where it rests. In this position the hook is out of engagement with the eye (i so that when tappet It" brings cross-head k back again the drum d is left behind. Af-

suitable speed in opposite directions, as indi l ter the parts have resumed the position shown in Figs. 1 and 2 the next shed is formed and the cycle of movements is repeated. The sprockets 7c 70 are mounted on coaxial shafts and are driven from the main shaft of the loom (not here shown) through a sprocket l and gear 1.

Having thus described the nature of this invention and the best means [know of car rying the same into practical effect, I claim 1. A shuttle-motion for a loom for heavy material comprising a guideway extending transversely of the loom, a slide adapted to move in the said guideway, a drum pivotally mounted on the said slide, and a second slide adapted to me ve in the said guideway, a hook carried by the said second slide and adapted to engage the first-named slide, and means for moving the said second slide from end to end of the said guideway.

22. A shuttle-motion for a loom for heavy material comprising a guideway extending transversely of the loom, a slide adapted to move in the said guide way, a drum pivotally mounted on the said slide, a frame fixed to the said slide, a device carried by the said frame to keep the weft-wire from becoming loose on the said drum, a device carried by the said frame to guide the weft-wire and means for moving the said slide from end to end of the said guideway.

3. A shuttle-motion for a loom for heavy material comprising a guideway extending transversely of the loom, a slide adapted to move in the said guideway, a drum pivotally mounted on the said slide, a second slide ada ted to move in the said guideway, a hoe pivot-ally mounted on the said second slide and ada ted to engage the said slide carrying the rum, a crown-wheel mounted to rotate in a horizontal plane on the said second slide and adapted to receive on its teeth or between them the said hook, means for rotating the said crown-wheel when. the said hook is to engage and to disengage the said slide carrying the drum and means for moving the said second slide to and fro in the said guideway.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GIOVANNI GIUSSAN I.

\Vitnesses JosEPn MILLARD, W. SKER'IEN. 

